Toothbrush



FIG. 1 is a top plan view of a toothbrush showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is a sectional view of the head of the toothbrush taken along line 4-4 of FIG. 2.

The side of the toothbrush not shown is a mirror image of the side shown in FIG. 2. 

The ornamental design for a toothbrush, substantially as shown and described. 